Fastener-inserting machine



July 31, 1928.

F. A, RUMNEY FASTENER INSERTING MACHINE .Filed July 20, I926 ZSheets-Sheet 2 m M w W Patented July 31, 1928..

1 UNITED STATES.

"PATENT OFFICE.

FEED A. .RUMNEY, F BOSTON, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHIN- ERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

FASTENER-INSERTING MACHINE.

Application filed July 20,

This invention relates to fastener-inserting machines and is illustrated herein as embodied in a machine for inserting blind or invisible eyelets.

In the manufacture of shoes, the term blind eyelet is applied to an eyelet having its flange lying upon the outer surface of the shoe upper, and with its barrel clenched between adjacent layers of the shoe upper so that the flange 0f the eyelet appears on the outside of the finished shoe. The term invisible eyelet, on the other hand, is applied to an eyelet having its flange lying upon the lining or facingof the shoe, and with the entering end of its barrel clenched between adjacent layers of the work so that the eyelet is not visible on the exterior of the shoe. The present invention is applicable not only to machines for inserting both blind and invisible eyelets but also, in some of its aspects, to machines for setting ordinary visible eyelets or other fasteners; As a matter of convenience it will be described herein with relation to the insertion of invisible eyelets, with the understanding, however, that this is done without any intention of limiting the invention thereby.

In the insertion of invisible eyelets by a machine of the type commonly used for that purpose and provided with a setting tool having a. clenching shoulder arranged to be introduced from one side and inserted through one of a plurality of layers of the work in a hole punched through all the laycrs to meet the entering end of an eyelet barrel introduced from the other-side of the work, thereby clenching the entering end of the eyelet barrel between adjacent layers of the material, there is often difficulty in controlling the work so as to cause the eyelets to be properly clenched between the layers Considering a shoe upper positioned with its upper leather upward and its 1111- ing downward, as itis when doing invisible eveleting, for example with a machine of the character disclosed in Letters Patent of the United States No. 1,228,768. granted June 5, 1917, on an application of Perley R. Glass, equipped with a setting tool of the type of Letters Patent of the United States N6. 1,468.086. granted September '18, 1923, on an application of Robert B. Smith, if the upper leather is too high relatively to the clenching shoulder of the eyelet-setting tool,

1926. Serial No. 123,787.

the eyelet, instead of clenching on the eyelet stay immediately below the upper leather, will clench below the eyelet stay or, in an extreme case, may even clench without passing through the lining. On the other hand, if the upper leather is not pushed completely past the clenching shoulder before the entermg end of the eyelet barrel spreads out wardly during its clenching past the clenching shoulder, the prongs of the eyelet barrel will either catch in the substance of the upper leather or na-y even pass through the lacing hole without clenching and will accordingly be visible on the surface of the shoe upper. These abnormal conditions are all undesirable and the worst of them either completely spoil the work or at least require that the eyelet be removed and that the work be done over.

It is an object of the present invention to provide a fastener-inserting machine adapted for use in the setting of invisible eyelets organized in'such a manner as accurately to control the relation of the clenching shoulder to the work and accordingly to insure the productionof perfect work free from the clefects above referred to.

-As herein disclosed, this is done by providing a combined punch and set (which is utilized also to feed the work) comprising a non-tapered, tubular punch co-operating with apunch block and a plunger housed within the punch, the end portion of the plunger together with the cutting end of the punch forming a clenching surface. In the illustrated machine, the plunger is springheld toward the work and yields during the punching-operation, being forced back by the work, within the punch. After the punching operation and during the feeding of the work the end of the plunger is forced out through the punch to eject from the punch the chips cutfrom the work. At the conclusion of the feeding movement, the punch and the plunger are both held rigidly against lengthwise movement with the end portion of the plunger and the cutting end of the punch in proper relation together to form a clenching surface. Surrounding and co-operating with the punching'and setting tool is an abutment supported by a rather stiff spring andnormally locateda. distance back of the cutting end of the punch substantially equal to the thickness of the layer of work beneath which the fasteners are to be clenched. During the punching operation the spring-held abutment yields to per-- surface of the upper layer (beneath which the fastener is to be clenched) in line with the end of the punch which serves as a clenching surface. Thus, when a fastener is introduced from the other side, its entering end is spread by the clenching surface formed by the end portion of the ejector and the cutting end of the punch in such a way that it readily enters between the upper leather and the eyelet stay or other layer adjacent thereto and is clenched in the de sired position. It should be noted that the spring that supports the abutment is stiff enough so that it holds the abutment substantially unyieldingly during the clenching operation, though of course during the punching operation it permits the abutment to move back relatively to the cutting end of the punch to permit the punch to cut through all the layers of the worlr on the punch-block.

A Not only. does this invention insure that the entering ends of the eyelets are properly positoned between the desired layers 01? the work, but it'puts much less strain on the upper leather than is the case when invis ble eyeleting is done with a setting tool having a clenching shoulder larger than the hole 1n the upper. leather through which it is forced, has been common practice for a number of years. Accordingly all tendency to crack or otherwise to injure the upper leather is eliminated.

Moreover, the invention permits the use of a combined punch ant. set, the punch of which cuts a hole big enough for the eyelet or other fastener to be set, instead of requiring the barrel of the eyelet to be forced. through a hole which is too small for the eyelet barrel.

In order to compensate for variations in the thickness of the upper leather beneath which the enteringends of the eyelet barrels are to be clenched, the spring-held abutment is, in the illustrated machine, supported by a carrier adjustable lengthwise of the setting tool so that the position the lower surface of the abutment assumes after the work is fed may be varied as desired.

With the above and other objects and features in view, the invention will. now be described in connection with the accompanyin drawings and will be pointed out in the claims.

nevasvv In the drawings Fig. 1 is a front elevation, partly in sec- Fig. 2 is perspective view ofthe punching and eyelet-inserting instrumentalities of the machine Figs. 3 and 4 are sectional views on a larger scale through the punching and eyelet-inserting instrumentalities of the machine, Fig, 3 showing the relative positions of the parts at the conclusion of the punching operation and Fig. 4 at the conclusion of the clenching operation; and Y Fig. 5 is an exploded View of the combined punch and set with which the machine is equipped.

. In the drawings the invention is illustrated as embodied in a machine of the type disclosed in said Letters Patent of the United States No. 1,228,768; Many of the details of such a machine are not disclosed herein since they are unnecessary to the understanding of the present invention. For such details reference may be had to said Letters Patent.

This machine, as shown particularly in Figs. '1 and '2, is provided with the usual work support 2, a solid punch block 4, edge gage 6, pres'ser-footl and bottom set 10.

Its upper set, indicated generally at 12, is

carried at the lower end of a hollow rod or punch-bar 14 mounted for vertical sliding movement in suitable bearings formed in a horizontally sliding head 16 fast upon a horizontal shaft 18 mounted for sliding movement in bearings 20 carried by the frame of th machine. The sliding head 16 also is provided with bearings 22 slidably mounted on a shaft 24 fast in the frame of the machine. A lever 26 2) engagesv a block 28 carried by head 16 and is rocked to move sliding head 16 horizontally to the left to give the setting tool 12 its work-feeding movement and to the right to give that tool its return. movement. Toggle mechanism 30 is provided to' lower the punch-bar 1 1 to cause the tool 12 to punch'a hole in the work, then slightly to raise the punch-bar 14 and setting tool 12 while the work is fed and, after the punching operation. to raise punch-bar i l and setting tool 12 for their return movement.

The machine is also provided with a raceway 32 to which eyelets are supplied from'a hopper 34 Su table mechanism indicated generally at 36 is provided to move the lower end of the aceway into and out of alinement with the spring-held spindle 38 of the lower set 10 so that the spindle may pick the endmost eyelet from the raceway and transfer the eyelet to clenching position. In accordance with the present invention, the combined punching; and setting tool 12 of the illustrated machine is made to comprise a tubular punching member 40 (Figs.

(til

3, 4 and 5) the lower end of which is reduced to form a cutting edge42. As illustrated, the punch is threaded into the lower end of punchbar 14. Housed in the punch 40 and movable axially thereof is a plunger 44 the upper end of which is engaged by a rod 46 slidingly mounted in a hole bored lengthwise through the punch-bar 14. An enlarged portion 48 formed on rod 46 engages 'a shoulder 50 (Fig. 1) formed inside of punch-bar14 and limits downward movement of rod 46. surface of the enlarged portion 48 of rod 46' is a helical spring 52 tending to urge rod 46 and plunger 44 downwardly. At its upper end spring 52 bears against'a cap plate 54 attached to a collar 56 threaded upon the upper end of punch-bar 14. Pivoted at 58 to the cap plate 54 (Fig. 2) is a finger-60. A spring 62 hearing at one end on finger and at the other end against a lug 64 carried by cap plate 52 tends to rock the eforward end of the finger 60downwardly. At its forward end finger 60 bears against the reduced 3 end .of rod 46 which projects through .a hole in cap plate Spring 62 serves .tokeep the forward end of the finger 60 in contact with the upper end of rod 46.

Threadedupon the lower end of punchbar 14 is an abutment having a groove 7.1

at its lower endreceiving a turn of a rather stiff spiral spring 72 which carries at its lower end an abutment 7 4, provided with a similar spring receiving groove 75, slidingly mountedon punch 40, By means of the screw-threaded mounting of abutment 70 on the lower end of punch-bar 14. the position at which s'rrin 72 tendsto hold the abutment 74 may be varied. Thus if the machine is to used for invisible .eyeleting, abutment 70 will be positioned so as to bring abutment 74 to a position'such that the end of punch 40 normally projects'beyond abutment 74 a distance substantially eq al to the thickness of the upper leatherof, the shoe upper to be operated upon.

The lower end of plunger 44 is reduced, being shaped as shown in Figs..3, 4 and 5, so that, together with the cutting end 420i the punch 40, it constitutes a clenching surface adapted-to spread andclench the entering end of an eyelet barrel, either between adjacent layers of materials or on the surface of the material, according to the adjustment of abutment 7 4.

Referring particularly to F 3 and 4, (which illustrate the setting of an invisible eyelet) when the combined punch and set is moved downwardly into engagement with the work, which is illustrated as comprising a layer of upper leather 7?, an eyelet stay 78, and lining f7 9, the cutting end 42'of the punch passes through the layers of the work and engages the punch block in the usual way. Durlng thls punching operation the Bearing upon the upper plunger 44 yields against the action ,of spring 52 and the abutment 7 4 yields against the action of spring 72 (Fig. 3). Then the pressure of punch 40 against punch block 4 is slightly relieved by suitable operation of the toggle mechanism 30 and sliding head 16 moves to the left to cause punch 40 to feed the work. As the cutting end 42 of punch 40 passes beyond the punch block. 4, spring 52 transmits its pressure through rod 46 and thrusts plunger 44 forwardly, ejecting from the punch40 the chips cut from the work and taking the position relatively to punch 40 I which is illustrated in Fig. 4, so that the reduced end portion of plunger 44 assumes a position relative to the cutting end 42 of punch 40 such that they together constitute a clenching surface. As punch 40 moves off the punchblock, spring 72 forces abutment 74 downwardly, causing the latter topush the lower layers of the work 05. the end of the punch and leaving the lower surface of the upper leather in alinement with the cutting end'of the punch. Thus the clenching" surface of the setting tool is properly positioned relativ'elyto the layers ofthe work so that when the eyelet (Fig. 4) carried by spindle 38 of the lower set'lO is introduced into the hole in the work its entering end will be properly clenched between the'upper leather and the eyelet stay. c Y

' To prevent the portion of the clenching surface formed upon the plunger 44 from retreating as the eyelet is introduced and clenched, the machine is provided with a cam surface 84 carried by a bracket 86 (Fig. 2) connected'by screw and slot connections 88 to "the frame of the machine. A roll 90 carried by the finger 60 is arranged during the work-feeding movement of sliding head 16 to move into engagen'ient with the cam surface 84 so that during the introductionand clenching of the'eyelet upward movement of rod '46 and of plunger 44 is prevented. In order to permit accurate adustment or tne position held durlng the clenchingoperation by the portion of the clenching surface formed on the lower end of plunger 44, an adjusting screw 92 is pro videdthreaded in'the frame of; the machine and bearing against the rear of bracket 86. Having described my invention, what I claim as new and desire to'secure by Letters Patent of the United States is: V

- 1 A fastener-inserting machine having a punch, and a plunger housed within the punch having its end portion shaped to constitute with the cutting portion of the punch a fastener-clenching surface.

2. A fastener-inserting machine having, in' combination, a non-tapered punch, a plunger housed within the punch having its end portion shaped to constitute with the cutting end of the punch a fastener-clenchpunch, a plunger housed within the punch having its end portion reduced and arranged I to constitute with the'cutting portion of the punch a fastener-clenching surface, and an abutment arranged to limit movement of the work past said clenching surface.

4. A fastener-inserting machine having a combined punching and setting tool formed and arranged to punch fastener receiving holes in a plurality of layers of material and to clench the entering ends of fastener barrels between adjacent layers of the material, and means housed within the punching portion of said tool to eject from the punching portion of said tool the chips cut thereby from the material.

5. A combined punching and setting tool for a fastener-inserting machine having a clenchingsurface arranged to be introduced through a hole formed in one of a plurality of layers of material to clench the entering end of a fastener barrel between adjacent layers of material, said tool being provided with an ejector housed within the punching when of the tool and arranged to force frnmLthe tool the chips punched by the tool from the work.

6. A fastener-inserting machine having a punch, a plunger housed within the punch having its end portion shaped to constitute with the cutting end of the punch a fastener clenching surface, and means arranged to permit yielding movement of the plunger relatively to the punch during the punching operation and to prevent relative movement of the plunger and the punch during the fastener-clenching operation.

7. A fastener-inserting machine having a punch, a plunger hOused Within the punch having its end portion tapered and arranged to constitute with the e'ndjportion of the punch a fastener-clenching surface, a spring arranged to permit yielding movement of the plunger relatively to the punch during the punching operation, and means including a cam arranged to prevent relative movement of the plunger and the punch during the fastener-clenching operation.

8. A fastener-inserting machine having a combined punch and set comprising a tubular member havinga punching end and an ejector'housed within the tubular member, and a spring tending to force the end of the ejector through the end of the punch to eject from the punch the chi-ps cut from the work, the end portion of the ejector and the cutting'end of the punch being so shaped that,

when the ejector protrudes from the punch,

they together constitute a clenching surface adapted to clench the entering end of a fastenerbarrel.

9, A fastener-inserting machine having a combined punch and set comprising a tubular punch member and an ejector housed within said punch member ,and spring pressed to be protruded from the punch and.

to eject therefrom the chips cut from the work, the end portion of the ejector and the cutting end of the punch being'so formed that, when the ejector protrudes from the punch, they together form a clenching surface adapted to clench the entering end of thebarrel of a fastener between'adja'cent layers of material.

10. A fastener-inserting machine having a punch, a punch block, means to move the punch into engagement with the punch block to form a hole in a; work piece positioned thereon, a spring-pressed v ejector housed within the punch and normally projecting therefrom but forced back completely within the punch while the punch is in-engageiment with the'punch block, and means for 7 moving the'punch along the punch block to feed the work from punchingto fastener- Y inserting position whereby when the punch passes from the punch block the ejector forces from the work the chips cut by the punch, the portion of the ejector adjacent to its end and the end surfac-e'of the gpunch' being so formed as togethertoconstitute a surface adapted to clench the enterlng end of a fastener barrel.

11. A fastener-inserting machine having a punch, a punch block, means to move the punch into engagement wit-h the punch block to form a hole in a work plece positioned thereon, an e ector, a spring arranged normally to cause the ejector to protrude from v adapted to clench the entering end of a fas-,

tener barrel between adjacent layers of material.

12. A fastenei inserting machine having 7 a tubular punch, an ejector housed within the punch, the end portion of the ejector and the cutting end of thepunch being shaped to provide a clenching surface arranged to clench the entering end of a fastener barrel between adjacent layers of material, means for moving the punch transversely to feed the work from punching to fastener-inserting position, said ejector being arranged to yield during the punching operation and to eject the chips from "the punch during the work-feeding movement of the punch, and means for preventing relative movement of the ejector and the punch during the clenching Operation.

13. A fastener-inserting machine having a tubular punch, an ejector housed Within the punch, the end portion of the ejector and the cutting end of the punch being shaped to provide a fastener clenching SL111". face, means for moving the punch transversely to feed the work from punching to fastener-inserting position, a spring arranged to permit the ejector to yield during the punching operation and to cause the ejector to eject the chips from the punch during the work-feeding movement of the punch, and means including a cam arranged to back up the ejector and thereby to prevent relative movement of the ejector and the punch during the clenching operation.

14. A fastener-inserting machine having a punch, a plunger housed within the punch having its end portion shaped to constitute with the cutting end of the punch a fastenerclenching surface arranged to clench the entering end of a fastener barrel between adj acent'layers of material, and an abutment surrounding the punch and arranged to control the position of the material relativelyto said clenching surface operation. j

15. A fastener-inserting machine having a tubular punch, an ejector housed within the punch, means to move the punch transversely to feed the work from punching to fastenerinserting position, said ejector being-arranged to yield during the punching operation and to eject thechips from the punch during the work-feeding movement of the punch, the end portion of the ejector and the cutting end of the punch being shaped during the clenching to provide a fastener clenching surface,

means'for holding the ejector against rear ward movement during the fastener-clenching operation, and an abutment arranged to control the position of the'work relatively to said clenching shoulder during the clenching operation.

16. A fastener-inserting machine having a tubular punch, a punch block co-operating therewith, an ejector housed within the punch, means to move the punch transversely of the punch block to feed the work from punching to fastener-inserting position, said ejector being arranged to yield during the punching operation and to eject the chips from the punch as the punch passes off the punch block during its work-feeding move ment, the end portion of the ejector and the cutting end of the punch being shaped to provide a clenching surface formed to clench the entering end of a fastener between adjacent layers of materiahmeans for holding the ejector against rearward movement during the fastener-clenching operation, and an abutment arranged to control the position of the work relatively to said clenching surface during the clenching operation.

17. An eyelet-inserting machine having, in combination, a tubularpunch, a punch block, means for causing relative movement of the punch and punch block arranged to cause the punch to form a hole through a. plurality of layers of material positioned upon the punch block and then to feed the material, an ejector housed within the punch arranged when the punch is moved out of engagement with the punch block to eject the chips punched from the work, the end portion of said ejector and the cutting end of the punch being so formed as together to constitute a clenching surface arranged after the punching operation to clench the entering end of an eyelet barrel between adjacent layers of the Work, and an abutment surrounding the punch and normally posi-- tioned back ofthe cutting end of the punch a distance substantially equal to the thickness of the layer of the material beneath which the eyelet is to be clenched to control the position of said layer during-the clenching operation.

18. A fastener-inserting machine having, in combination, a tubular punch, a punch block, means for causing relative movement of the punch and punch block to cause the punch to form a'hole through a plurality of layers of material positioned upon the punch block and then to feed the material, an ejector housed within the punch arranged when the punch is moved out of engagement with the punch block to eject the 7 chip punched from the work, the end portion of said ejector and the cutting end of the punch being so formed as together to constitute a clenching shoulder arranged after the punching operation to clench the entering end of a fastener barrel between adjacent layers of the work, and a spring-pressed abutment surrounding the punch normally positioned back of the cutting end of the punch a distance substantially equal to the thickness of the layer of the work piece beneath whichthe fastener is to be clenched to control the position of said layer during the clenching operation and arranged to yield during the punching operation.

19. A machine for inserting fasteners through one or more'of a plurality of layers of material and clenching the entering ends of their barrels beneath a layer of the material having, in combination, a tubular.

punch having its cutting end arranged to act as a clenching surface, a punch block, means for causing relative movement of the punch and punch block to cause the punch to form a hole through a plurality of layers of material positioned upon the punch block and then to feed the material, and a spring pressed abutment surrounding the punch arranged to yield during the punching operation and to return, as the punch, during the feeding of the material, moves past the edge of the punch-block, to a position a distance back of the clenching surface at the end of the punch substantially equal to the thickness of the layer-of material beneath which ing, in combination, a 'non tapered punch, a punch block, means for causing relative movement 'of the punch and punch block arranged to cause the punch to form a hole through"apluralityof layers of material positioned upon the punch block and then to feed the material, a plunger housed within the punch, the end portion of said plunger together with the cutting end of the punch being arranged to serve as a clenching surface after the punch moves out of engagemeat with the punchjblock, to clench the entering end of a fastener barrel between adjacent layersof the work, and an abutment surrouhdingthe punch, normally positioned back of thecutting'en d of the punch a distancesubstantially equal to the thickness of the layer orlayers of material beneath which the fasteners are to be clenched, arranged to yield during the'punching operation and to return toitsnormal position whenthe punch moves out of engagement with the punch block thereby forcing the layer or layers of material through which the fasteners are to pass off the punehand positioning the material relatively to theclcnching surface for the insertion of a fastener. I

21. A fastener-inserting machine having a setting tool provided with a clenching' surface arranged to be inserted through a hole formed in one of a plurality of layers of inaterial to clench the entering end of the barrel of a fastener between adjacent layers of the material,'an abutment surrounding the setting tool, andfaspring bearing at one end against and yieldingly carrying the abutment andbearin'g at the other end against a rigidly supported abutment mounted for movement with the setting tool.

"22. A fastener inserting machine having a setting tool provided with a clenching surface arranged to be inserted through a hole fcrnied in oneof a plurality of layers of material to clench the entering end of the barrel of a fastener between adjacent layers of the material, an abutment surrounding the setting tool, and a spring hearing at one end against and yieldingly carrying the abutment and bearing at the other end against a second abutment also surrounding the setting to'ol and rigidly but adj us'tablymounted for movement with the setting tool.

28. A fastener-inserting machine having a setting tool provided with a clenching surface arranged to be introduced through a hole in one of a plurality of layers of mate rial to fclench "the entering end of a fastener barrel between adjacent layers of the material, a carrier for the setting tool, an abutment adj'ustably'moun'ted upon said carrier, a spring bearing against and supported by said abutment, and a second abutment surrounding t'he setting tool and yieldingly supported by said spring to control the position of the work relatively to the clenching surface during the insertion and clenching of fasteners. I

24-. An eyelet-inserting machine having, in combination, a hollow punch, an ejector housed within the punch having its end portion shaped to form with the cutting. end of the punch an eyelet-clenching shoulder, an abutment slidably mounted relatively to the punch, a spring having one end bearing upon said abutment'and tendingfwhen compressed to move the abutment toward the entering end of the punch, and a second abutment against which the other end of the spring bears rigidly connected to the punch. H w

25. An eyelet-inserting machine having, in combination, a hollow punch, an ejector housed withinv the punch having its end portion shaped to form with the cutting end of the punch an eyelet-clenching shoulder,

Hill

an'abutment slidably mounted relatively to the punch, a spring having one end bearing upon said abutment and tending when compressed to move the abutment towardthe entering end of the punch, and a second abutment against which the other end of the spring bears rigidly connected to the punch but adjustable toward andfrom the cutting endof the punch so as to permit adjustment of the position at which the first abutment is normally held by said spring.

26. A fastening inserting machine having a combined punching and setting tool comprising a tubular punching member provided with a fastener clenching surface, one end of said tubular member being reduced to form a punching edge, a chip ejecting plunger housed in the tubular member and movable axially thereof, and a helical spring tending to thrust the chip ejector forwardly thereby ejecting from the tubular member chips cut from the work but permitting the ejector to yield during the punching operation. v a

27. A fastening inserting -machine having a solid punch block and a combined punching and setting tool cooperating there- With comprising a tubular member provided With a fastener clenching surface and re duoed at one end to form a punching edge,

a chip ejector housed Within said tubular member, and a spring urging the ejector forwardly through the tubular member to eject therefrom chips cut from the Work but yieldable to permit the ejector to move back- 10 Wardly away from the punching edge of the tool as the latter moves toward and through the Work into engagement With the punch block during the punching operation.

In testimony whereof I have signed my 15 name to this specification.

FRED A. RUMNEY. 

